Ciro Santilli @cirosantilli 40

One of the most powerful chess engine as of 2023: computer chess competition.

CLI program implementing Universal Chess Interface: www.reddit.com/r/ComputerChess/comments/b6rdez/commandline_options_for_stockfish/

How to actually play against it: chess.stackexchange.com/questions/4353/how-to-install-stockfish-on-ubuntu So hard!

A concise to describe a specific permutation.

A permutation group can then be described in terms of the generating set of a group of specific elements given in cycle notation.

E.g. en.wikipedia.org/w/index.php?title=Mathieu_group&oldid=1034060469#Permutation_groups mentions that the Mathieu group $M_{11}$ is generated by three elements:which feels quite compact for a simple group with 95040 elements, doesn't it!

Gwern Branwen's website.

One thing that annoys Ciro Santilli about that website are the footnote overload. Ciro likes linear things.

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A Hermitian matrix.

composite particle made up of an even number of elementary particles, most commonly one particle and one anti-particle.

This can be contrasted with mesons, which have an odd number of elementary particles, as mentioned at baryon vs meson vs lepton.

Added font awesome icons. github.com/ourbigbook/ourbigbook/issues/151

Didn't manage to subset, but so be it for now: stackoverflow.com/questions/62395038/how-can-i-export-only-one-character-from-ttf-woff-file-to-avoid-load-unnecessa/71197892#71197892

After something broke on the website due to SQLite vs PostgreSQL inconsistencies and took me a day to figure it out, I finally decided to update the test system so that OURBIGBOOK_POSTGRES=true npm test will run the tests on PostgreSQL.

Originally, these were being run only on SQLite, which is the major use case for OurBigBook CLI, which came before the website.

But the website runs on PostgreSQL, so it is fundamental to test things in PostgreSQL as well.

TODO understand.

Minimal example: github.com/cirosantilli/x86-bare-metal-examples/blob/5c672f73884a487414b3e21bd9e579c67cd77621/paging.S

Like everything else in programming, the only way to really understand this is to play with minimal examples.

What makes this a "hard" subject is that the minimal example is large because you need to make your own small OS.

Correspond to the angular part of Laplace's equation in spherical coordinates after using separation of variables as shown at: en.wikipedia.org/wiki/Spherical_harmonics#Laplace's_spherical_harmonics

His website is down as of 2020, shame: wiki.dandascalescu.com/essays/english-universal-language

This dude is interesting. Quite crazy type. It is hard to differentiate genius from mad.

Ciro Santilli bumps on his Stack Overflow from time to time: stackoverflow.com/users/1269037/dan-dascalescu.